// -*- C++ -*-
/***************************************************************************
 *
 * cerrno - C++ Standard library interface to the ANSI C header errno.h
 *
 * $Id$
 *
 ***************************************************************************
 *
 * Copyright (c) 1994-2005 Quovadx,  Inc., acting through its  Rogue Wave
 * Software division. Licensed under the Apache License, Version 2.0 (the
 * "License");  you may  not use this file except  in compliance with the
 * License.    You    may   obtain   a   copy   of    the   License    at
 * http://www.apache.org/licenses/LICENSE-2.0.    Unless   required    by
 * applicable law  or agreed to  in writing,  software  distributed under
 * the License is distributed on an "AS IS" BASIS,  WITHOUT WARRANTIES OR
 * CONDITIONS OF  ANY KIND, either  express or implied.  See  the License
 * for the specific language governing permissions  and limitations under
 * the License.
 * 
 **************************************************************************/

#include <rw/_defs.h>

#ifndef _RWSTD_NO_PURE_C_HEADERS
#  include <ansi/_cerrno.h>
#else

#ifndef _RWSTD_NO_DEPRECATED_C_HEADERS

#ifndef _RWSTD_NAMESPACE_STD_OPEN
#define _RWSTD_NAMESPACE_STD_OPEN 3

_RWSTD_NAMESPACE (std) { 

#endif   // _RWSTD_NAMESPACE_STD_OPEN


#include _RWSTD_ANSI_C_ERRNO_H


#if _RWSTD_NAMESPACE_STD_OPEN == 3
#  undef _RWSTD_NAMESPACE_STD_OPEN

}   // namespace std

#endif   // _RWSTD_NAMESPACE_STD_OPEN == 3

#else   // if defined (_RWSTD_NO_DEPRECATED_C_HEADERS)

#ifndef _RWSTD_CERRNO_INCLUDED
#define _RWSTD_CERRNO_INCLUDED

#if    !defined (errno) \
    || !defined (EDOM) || !defined (ERANGE) || !defined (EAGAIN)
#  include _RWSTD_ANSI_C_ERRNO_H
#endif   // errno ...

#if !defined (_RWSTD_NO_NAMESPACE) && !defined (_RWSTD_NO_USING_LIBC_IN_STD)

namespace std {

// 17.4.1.2, p5 - errno may be a macro
#ifndef errno
using ::errno;

   // lwg issue 310 - errno shall be a macro
#  define errno errno
#endif   // errno

}   // std

#endif   // !_RWSTD_NO_NAMESPACE && !_RWSTD_NO_USING_LIBC_IN_STD

#endif   // _RWSTD_CERRNO_INCLUDED

#endif   // _RWSTD_NO_DEPRECATED_C_HEADERS

#endif   // _RWSTD_NO_PURE_C_HEADERS
